How can I propagate a Dracaena fragrans plant effectively?

To propagate a Dracaena fragrans plant effectively, you can use stem cuttings or air layering. For stem cuttings, cut a healthy stem with at least two nodes, let it dry for a few days, then plant it in a well-draining soil mix. Keep the soil moist and place the cutting in a warm, bright location. For air layering, make a small incision on a healthy stem, apply rooting hormone, wrap the incision with moist sphagnum moss, and cover it with plastic wrap. Once roots form, cut the stem below the new roots and plant it in a pot with soil.